Pulley casing or housing.



No. 857,548. PATENTED JUNE 1a, 1907.

c. A. BBINLEY.

PULLEY CASING 0R HOUSING.

APPLIOATIOH FILED JAILZS, 1907.

WITNESSES: v INVENTORZ C/ffl/flfS/i. B/W/YLEJ,

UNITED STATES PATENT OFFICE.

CHARLES A. BRINLEY, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE AMERICAN PULLEY COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

PULLEY CASING OR HOUSING- Specification of Letters Patent.

Patented June 18,1907.

Application filed January 25, 190% Serial N0. 353,955-

To all, w/tom, it may concern:

Be it known that I, CHARLES A. BRINLEY, of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvemenst in Pulley Casings or Housings ,whereof the following is a specification, reference being had to the accompanying drawings.-

An important application of my invention, which I now contemplate, is in connection with sheet metal housings for sash-pulleys, and I have therefore shown the invention as thus employed.

Figure I, represents a perspective view of a sash-pulley housing in which my invention is to be embodied, indicating, in dotted lines, the location of the axle for the pulley. Fig. II, is a perspective view of the piece of metal which constitutes said axle. Fig. III, is a top or plan view of the sash-pulley, showing the wheel or disk of the pulley in position on the axle.

In structures of the character to which my invention relates, the axle is a fixed member, the" wheel of the pulley, or other moving member, rotating freely thereon. Ordinarily,

this axle is seated in holes formed in the housings, the axle being secured at its projecting ends by some externalmeans, such as a previously formed head upon one end and a rivet or upset head formed upon the other end after the insertion of the axle in place. It is of course undesirable to have any laterally projecting portions and in order to obviate this objection, the sides of the housings are sometimes countersunk, a depression of considerable depth being required for this purpose. The processes of countersinking, punching theholes, and forming a head upon the axle, and riveting or upsetting the end of the axle are relatively expensive and troublesome, and moreover, even when the axle is inserted and secured in position, it does not constitute a distance piece to prevent the forcing of the sides in against the wheel hub, To obviate these objections, I construct the device as follows y In the drawings,1, indicates the base plate of the metallic housing, and 2, 2, the sides thereof, whose ends are bent until they are approximately in contact along the parts 3, 3. The base-plate is provided with the usual countersunk holes 8, 8, for the attaching screws. The structure thus made is one of the ordinary forms of sheet metal housings, the parts being struck up and secured together in any convenient manner.

The dotted circles 4, 4, of Fig. I, indicate the parts at which the axle is to be applied. This axle 5, is shown in perspective in Fig. II, and consists of a short piece of cylindrical metallic rod, or wire, which can be readily sheared to proper lengths, in accordance with the'internal diameter of the housing, within which it is entirely inclosed. This axle 5, with the pulley wheel 6, placed in position thereon, is then inserted between the sides of the housing, with the ends of the axle opposite the parts 4, 4, the housing being imperforate at these parts.

The terminals of any suitable electrical welding apparatus are then applied to the exterior of the housing at the parts 4, 4, and electric energy, accompanied by pressure in the usual way, is applied until the respective ends of the axle 5, are welded to the internal surface of the housing at said parts. In structures of the class described, this operation can be performed almost instantaneously, without causing the axle to become attached to the pulley, or in any way impairing the rotatability of the latter thereon. The pulley may be provided with hubs having projecting end portions 7, or loose washers may be employed at these parts, in order to reduce the amount of lateral play of the pulley upon the axle. It will thus be seen that the completed structure, when embodying my invention in its fullest form, comprises an imperforate housing having an axle which is substantially integral therewith at both. ends, and that although the housing need. not be depressed or countersunk there will be no projecting portion upon the exterior at the part of the axle. Furthermore, the axle constitutes a distance piece which prevents the sides of the housing from being forced together at that part.

Apart from the advantages of the structure itself, as thus pointed out, the manufacture is attended with great economy, as the processes ofpunching and counter-sinking the ousing are dispensed with and the axle does not require to be made in the first instance with a head or to be riveted or upset after insertion.

IOC

As above stated, I have described my invention in its fullest embodiment, but it must be understood that I do not limit my claims so as to require that the aXle shall be secured by Welding at both of its ends, nor so as to exclude the countersinking, or perforation, I of the sides, at the part of attachment, as an incident of manufacture, since the essential character of the finished structure does not depend upon these details of the process of manufacture.

I am of course aware that it is not new to unite pieces of metal by electric Welding, and I do not claim the application of electric Welding for the general purpose of uniting pieces to form a housing.

Having thus described my invention, 1 claim 1. A housing of metal having an axle electrically Welded at one or both of its ends to the metal of the housing.

2. An imperforate housing of metal having an inclosed axle substantially integral, at one or both of its ends, with the metal of the housing.

In testimony whereof, I have hereunto signed my name, at Philadelphia, Pennsyl- Vania, this 24th day of January 1907.

CHARLES BRINLEY.

Witnesses JAMES H. BELL, WILLIAM J. SPERL. 

